<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>数据类型</title>
	<script type="text/javascript">
		// 用单引号或者双引号包起来的字符
		// 
		// var a = 100;
		// var b = a;


		
		var name ="学并\"思";
		var name = 'xuebingsi';
		var num = '1000';
		var price = '78.99';
		var schoolName = '广东机电';


		var num = 1000;
		var num1 = 4543.546;
	
		


		var bool = true;

		var bool = false;

		var  a = null;

		var b;

		var num = '456fghfgh456';

		var num ='5654px';

		// nums = Number(num);
		// 
		nums = parseInt(num);

		// var res =  typeof(nums);

		document.write(nums);



	</script>
</head>
<body>
	
</body>
</html>